I know this is a necro, but PvP died pretty much after MoP.
In early WoW, PvPers made up half the game, easily.
Then one day, around Cataclysm, League of Legends came out and loads of PvPers just left for that. Dota 2 later on, as well.
Basically, WoW PvP was abandoned for other games.
PvE wasn’t abandoned, because it was still fairly unique, even now with M+, not a lot of other games provide something similar.
Imagine if WoW devs stopped adding to PvE because there were better PvE games out there- that’s what happened with PvP.
The WoW devs decided they couldn’t compete, and PvP population fell to whatever it is now, probably around 5% of WoW players doing PvP at the moment.
It’s really bad, and saying PvP is dead is an understatement.
Would you play League of Legends or Call of Duty if the matches were around 45 mins to 1 hour of waiting between games?
No, you would not. You’d drop that game because it’s dead, and play something else.